P2混联式混合动力汽车的液压控制系统设计

Construction of hydraulic pressure control components of hybrid cars

摘要:

针对混联式混合动力汽车能量利用效率低,动力传递损耗大的问题,研究对混联式混合动力汽车的液压控制系统进行了研究。进行了离合器动力学、安全阀状态及液压控制系统中的流体力学分析。采用工况分析与参数化设计理念,对P2混联式混合动力汽车的液压控制系统进行了设计研究,该设计的独特之处在于改变了汽车不同工作模式的切换方式。经过实验测试,完全开启后安全阀压力可稳定在16bar,且该控制系统利用离合器即可完成工作模式的切换,有效提高了汽车的能量利用效率,并降低了动力传递过程中的损耗。研究设计的液压控制系统实现了新能源汽车驾驶体验的提升及汽车的节能减排。

Abstract:

In response to the low energy utilization efficiency and high power transmission loss of hybrid electric vehicles, the hydraulic control system of hybrid electric vehicles was studied. Conducted fluid dynamics analysis on clutch dynamics, safety valve status, and hydraulic control system. The hydraulic control system of P2 hybrid electric vehicle was designed and studied using working condition analysis and parametric design concepts. The unique feature of this design is that it changes the switching mode of different working modes of the vehicle. After experimental testing, the pressure of the safety valve can stabilize at 16 bar when fully opened, and the control system can switch working modes using the clutch, effectively improving the energy utilization efficiency of the car and reducing losses during power transmission. The hydraulic control system designed through research has improved the driving experience of new energy vehicles and achieved energy conservation and emission reduction.